PERMEABILITY FROM RESISTIVITY AND PORE SHAPE

We test the relation k = the product of m squared/K sub 0 and F to the power of -1.5, where k is permeability, m is hydraulic radius, F is the formation factor, and K sub 0 is a constant close to 2.5. Parameters k, m, and F have been measured in the laboratory or taken from the literature for two granites and a number of sandstones and ceramics. Predicted and measured K agree to within about a factor of 2 over the 9 orders of magnitude range of k. A similar relation closely predicts the change in permeability with stress measured for granite. Application to rocks at depth seems limited at present, for although deep resistivity may be known, information on the size of pore spaces, needed to calculate m, is generally not available. /Author/

• Corporate Authors:

  American Geophysical Union

  1909 K Street, NW, Division of Hydrology
  Washington, DC  United States  20006
• Authors:
  • Brace, W F
• Publication Date: 1977-8-10

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 3343-49
• Serial:
  • Journal of Geophysical Research
  • Volume: 82
  • Issue Number: 23
  • Publisher: American Geophysical Union

Subject/Index Terms

• TRT Terms: Ceramic materials; Electrical resistivity; Forecasting; Granite; Permeability; Pores (Geology); Sandstones; Stresses
• Uncontrolled Terms: Pores
• Old TRIS Terms: Resistivity
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00164002
• Record Type: Publication
• Report/Paper Numbers: Paper No. 7B0238
• Files: TRIS
• Created Date: Oct 29 1977 12:00AM